CN113012992A - Modular automatic reclosing miniature circuit breaker - Google Patents
Modular automatic reclosing miniature circuit breaker Download PDFInfo
- Publication number
- CN113012992A CN113012992A CN202110454001.3A CN202110454001A CN113012992A CN 113012992 A CN113012992 A CN 113012992A CN 202110454001 A CN202110454001 A CN 202110454001A CN 113012992 A CN113012992 A CN 113012992A
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- China
- Prior art keywords
- line switch
- leakage protection
- circuit breaker
- electric leakage
- tubes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/66—Power reset mechanisms
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Abstract
The invention relates to a modularized automatic reclosing small-sized circuit breaker, which comprises a circuit breaker breaking unit and an automatic reclosing device, wherein the circuit breaker unit comprises an N-line switch module, a plurality of L-line switch modules and an electric leakage protection metering module, the electric leakage protection metering module comprises a shell and an electric leakage protection metering assembly, the electric leakage protection metering assembly comprises an electric leakage protection circuit board, a plurality of conductive tubes, a zero-sequence mutual inductor which is electrically connected with the electric leakage protection circuit board and sleeved on the plurality of conductive tubes, a plurality of conductive plates, a plurality of straight-through tubes, a plurality of current mutual inductors, a plurality of conductive plates connected with the plurality of straight-through tubes and a plurality of wiring terminals connected with the plurality of conductive plates, one ends of the plurality of conductive tubes are respectively connected to the N-line switch module and the plurality of L-line switch modules, and the plurality of conductive tubes are electrically connected with the N-line switch module and the plurality of L-line switch modules. The invention has the advantages of simple structure, stable and reliable performance, small volume, convenient assembly and low cost.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to an automatic reclosing miniature circuit breaker.
Background
At present, small circuit breakers are widely used in low-voltage distribution networks, mainly in various places such as industrial, commercial, high-rise and residential houses, and can perform overcurrent protection and leakage protection on electric devices such as motors, distribution lines and lighting circuits. The traditional small circuit breaker needs manual operation to complete the opening and closing actions. With the development of intelligent power grids in China, on the premise of requiring safe operation of the power grids, the realization of intellectualization of control of electric appliances is more and more urgent. In order to cope with new situation changes, the existing miniature circuit breaker should be provided with an automatic reclosing function. The electric operating mechanism of the miniature circuit breaker is an accessory used for a remote electric opening and closing circuit breaker, is directly matched with a prepayment electric energy meter for use, and can realize reclosing after payment. The existing miniature circuit breaker capable of automatically reclosing is unreasonable in structural design, complex in assembly, low in production efficiency and high in cost, and cannot be assembled in a modularized mode, so that the miniature circuit breaker capable of automatically reclosing has the defects of complex structure, large size, unreliable performance, inconvenience in assembly and high cost.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a modular automatic reclosing miniature circuit breaker which is simple in structure, stable and reliable in performance, small in size, convenient and fast to assemble and low in cost.
In order to achieve the purpose, the invention adopts a modularized automatic reclosing small circuit breaker, which comprises a breaker breaking unit and an automatic reclosing device assembled with the breaker breaking unit, wherein the breaker breaking unit comprises an N-line switch module arranged on one side of the automatic reclosing device, a plurality of L-line switch modules arranged on one side of the N-line switch modules in a superposed manner, and an electric leakage protection metering module arranged on one sides of the N-line switch modules and the plurality of L-line switch modules, the electric leakage protection metering module comprises a shell and an electric leakage protection metering assembly arranged in the shell, the electric leakage protection metering assembly comprises an electric leakage protection circuit board, a plurality of conductive tubes, a zero-sequence mutual inductor electrically connected with the electric leakage protection circuit board and sleeved on the plurality of conductive tubes, a plurality of conductive plates respectively connected with the conductive tubes in a phase line manner, a plurality of straight-through tubes respectively communicated with the plurality of conductive plates, a plurality of, The leakage protection circuit board comprises a plurality of current transformers, a plurality of conducting strips and a plurality of wiring terminals, wherein the current transformers are sleeved on a plurality of straight-through tubes respectively and are electrically connected with the leakage protection circuit board, the conducting strips are connected with the straight-through tubes, the wiring terminals are connected with the conducting strips, one ends of the conducting tubes are connected to an N-line switch module and a plurality of L-line switch modules respectively, and the conducting tubes are electrically connected with the N-line switch module and the L-line switch modules.
The beneficial effect of above-mentioned structure is: this automatic reclosing miniature circuit breaker adopts modular structure design, and the circuit breaker unit comprises N line switch module, L line switch module, earth leakage protection module, can be according to user's demand, and the assembly of flexible combination of going certainly, and earth leakage protection module clamps on N line switch module, L line switch module, and the assembly is more convenient, is favorable to improving production efficiency, and can realize this automatic reclosing miniature circuit breaker's earth leakage protection, the function of measurement. And the internal structure of the leakage protection module is simple in design and reasonable in layout. Therefore, the automatic reclosing miniature circuit breaker has the advantages of simple structure, stable and reliable performance, small volume, convenience and quickness in assembly and low cost.
Particularly, the plurality of conductive tubes are in a rectangular array and penetrate through the zero sequence transformer respectively, a first screw is arranged in each conductive tube, each first screw sequentially penetrates through one end of each conductive plate, the conductive tubes and is connected to the contact plates of the N-line switch module and the L-line switch modules respectively, a second screw is arranged in each through tube, and each second screw sequentially penetrates through the conductive plates and the through tubes and is connected to the other end of each conductive plate. The conducting tube, the conducting plate, the straight-through tube and the conducting plate are connected to the N-line switch module and the L-line switch module through the first screw and the second screw in a penetrating mode, so that the electric leakage metering module, the N-line switch module and the L-line switch module are convenient to assemble, and the assembly is more convenient.
Particularly, the zero sequence transformer on correspond a plurality of current conducting plates punishment and be provided with a draw-in groove respectively, a plurality of current conducting plates block respectively in the draw-in groove, and constitute a plurality of current conducting plates and zero sequence transformer's joint cooperation, and be provided with the apron of shroud on a plurality of current conducting plates on the zero sequence transformer. The current conducting plate block is in zero sequence transformer's draw-in groove, the assembly of current conducting plate and zero sequence transformer of being convenient for, and the apron can avoid the current conducting plate to expose, is favorable to improving this automatic reclosing miniature circuit breaker's security performance.
Particularly, zero sequence transformer on be provided with the joint sand grip, the apron in be provided with joint sand grip matched with joint groove, joint sand grip block at the joint inslot, and constitute apron and zero sequence transformer's joint cooperation. The zero sequence transformer and the cover plate are assembled in a clamping matching mode, and the assembly is more convenient.
Particularly, a plurality of partition plates are respectively arranged on one side of the cover plate corresponding to the plurality of current transformers, and the partition plates respectively partition between every two adjacent current transformers.
Particularly, a power taking piece is arranged between each of the wiring terminals and the leakage protection circuit board, one end of each power taking piece is provided with a pin inserted on the leakage protection circuit board, the other end of each power taking piece is inserted in each wiring terminal, and the other end of each power taking piece is provided with a contact elastic piece abutted against the corresponding conductive piece. The power taking piece can collect the voltage signal of the wiring terminal on the electric leakage protection circuit board, so that the voltage implementation monitoring function of the automatic reclosing miniature circuit breaker is realized, the power taking piece is connected with the electric leakage protection circuit board in a plugging mode, the assembly is more convenient, the power taking piece is provided with the contact elastic piece which is in contact with the conductive piece, and the electric connection of the wiring terminal, the power taking piece and the conductive piece can be ensured to be more reliable.
Particularly, the casing of electric leakage measurement module on be provided with the card hole, L line switch module's shell on be provided with the checkpost, the checkpost block in the card hole, and constitute electric leakage measurement module and L line switch module's joint cooperation. The electric leakage metering module is connected with the L-line switch module in a clamping matching mode, so that the electric leakage metering module is convenient to assemble with the L-line switch module, and the assembly efficiency is higher.
Drawings
FIG. 1 is a perspective view of an embodiment of the present invention.
Fig. 2 is an exploded view of an embodiment of the present invention.
Fig. 3 is an internal structural view of the embodiment of the present invention.
Fig. 4 is an assembly diagram of the conducting strip, the through pipe and the current transformer according to the embodiment of the invention.
Fig. 5 is an assembly diagram of the conducting plate, the conducting tube and the zero sequence transformer according to the embodiment of the invention.
FIG. 6 is a perspective view of a cover plate according to an embodiment of the present invention.
Fig. 7 is a perspective view of a power strip according to an embodiment of the invention.
Detailed Description
As shown in fig. 1 to 6, an embodiment of the invention is a modular automatic reclosing miniature circuit breaker, including a circuit breaker breaking unit 10 and an automatic reclosing device 20 assembled with the circuit breaker breaking unit 10, where the circuit breaker unit 10 includes an N-line switch module 11 disposed on one side of the automatic reclosing device 20, a plurality of L-line switch modules 12 disposed on one side of the N-line switch module 11 in an overlapping manner, an earth leakage protection metering module 30 disposed on one sides of the N-line switch module 11 and the plurality of L-line switch modules 12, the earth leakage protection metering module 30 includes a housing 31, an earth leakage protection metering assembly 32 disposed in the housing 31, and the earth leakage protection metering assembly 32 includes an earth leakage protection circuit board 321, a plurality of conductive tubes 322, a zero sequence transformer 323 electrically connected with the earth leakage protection circuit board 321 and sleeved on the plurality of conductive tubes 322, and a plurality of conductive plates 324 respectively connected with the plurality of conductive tubes 322 in a phase line manner, The leakage protection circuit board comprises a plurality of straight-through tubes 325 respectively communicated with a plurality of conductive plates 324, a plurality of current transformers 326 respectively sleeved on the straight-through tubes 325 and electrically connected with the leakage protection circuit board 321, a plurality of conductive sheets 327 connected with the straight-through tubes 325, and a plurality of wiring terminals 328 connected with the conductive sheets 327, wherein one ends of the conductive tubes 322 are respectively connected to the N-line switch module 11 and the L-line switch modules 12, and the conductive tubes 322 are electrically connected with the N-line switch module 11 and the L-line switch modules 12. As shown in fig. 2 and 3, the plurality of conductive pipes 322 respectively penetrate through the zero sequence transformer 323 in a rectangular array, a first screw 329 is respectively arranged in each conductive pipe 322, each first screw 329 sequentially penetrates through one end of the conductive plate 324, the conductive pipe 322 and is respectively connected to the N-line switch module 11 and the contact plate 13 of the plurality of L-line switch modules 12, a second screw 330 is respectively arranged in each through pipe 325, and each second screw 330 sequentially penetrates through the conductive plate 327 and the through pipe 325 and is connected to the other end of the conductive plate 324. The conducting tube, the conducting plate, the straight-through tube and the conducting plate are connected to the N-line switch module and the L-line switch module through the first screw and the second screw in a penetrating mode, so that the electric leakage metering module, the N-line switch module and the L-line switch module are convenient to assemble, and the assembly is more convenient.
As shown in fig. 2, 4, 5, and 6, a plurality of slots 3231 are respectively disposed on the zero sequence transformer 323 corresponding to the plurality of conductive plates 324, the plurality of conductive plates 324 are respectively engaged with the slots 3231, and the plurality of conductive plates 324 are engaged with the zero sequence transformer 323, and a cover 331 covering the plurality of conductive plates 324 is disposed on the zero sequence transformer 323. The current conducting plate block is in zero sequence transformer's draw-in groove, the assembly of current conducting plate and zero sequence transformer of being convenient for, and the apron can avoid the current conducting plate to expose, is favorable to improving this automatic reclosing miniature circuit breaker's security performance. Zero sequence transformer 323 on be provided with joint sand grip 3232, apron 331 in be provided with joint sand grip 3232 matched with joint groove 3311, joint sand grip 3232 block in joint groove 3311, and constitute apron 331 and zero sequence transformer 323's joint cooperation. The zero sequence transformer and the cover plate are assembled in a clamping matching mode, and the assembly is more convenient. A plurality of partition plates 3312 are respectively arranged on one side of the cover plate 331 corresponding to the plurality of current transformers 326, and the plurality of partition plates 3312 are respectively arranged between every two adjacent current transformers 326.
As shown in fig. 3 and 7, a power taking piece 332 is respectively disposed between the plurality of connection terminals 328 and the earth leakage protection circuit board 321, one end of the power taking piece 332 is provided with a pin 3321 inserted in the earth leakage protection circuit board 321, the other end of the power taking piece 332 is inserted in the connection terminal 328, and the other end of the power taking piece 332 is provided with a contact spring piece 3322 abutted against the conductive piece 327. The power taking piece can collect the voltage signal of the wiring terminal on the electric leakage protection circuit board, so that the voltage implementation monitoring function of the automatic reclosing miniature circuit breaker is realized, the power taking piece is connected with the electric leakage protection circuit board in a plugging mode, the assembly is more convenient, the power taking piece is provided with the contact elastic piece which is in contact with the conductive piece, and the electric connection of the wiring terminal, the power taking piece and the conductive piece can be ensured to be more reliable. As shown in fig. 2 and 3, a clamping hole 311 is formed in the housing 31 of the electric leakage measuring module 30, a clip 122 is arranged on the housing 121 of the L-line switch module 12, and the clip 122 is clamped in the clamping hole 311 to form a clamping fit between the electric leakage measuring module 30 and the L-line switch module 12. The electric leakage metering module is connected with the L-line switch module in a clamping matching mode, so that the electric leakage metering module is convenient to assemble with the L-line switch module, and the assembly efficiency is higher.
This automatic reclosing miniature circuit breaker adopts modular structure design, and the circuit breaker unit comprises N line switch module, L line switch module, earth leakage protection module, can be according to user's demand, and the assembly of flexible combination of going certainly, and earth leakage protection module clamps on N line switch module, L line switch module, and the assembly is more convenient, is favorable to improving production efficiency, and can realize this automatic reclosing miniature circuit breaker's earth leakage protection, the function of measurement. And the internal structure of the leakage protection module is simple in design and reasonable in layout. Therefore, the automatic reclosing miniature circuit breaker has the advantages of simple structure, stable and reliable performance, small volume, convenience and quickness in assembly and low cost.
Claims (7)
1. The utility model provides a modularization reclose miniature circuit breaker, includes circuit breaker disconnected unit, the recloser who assembles mutually with circuit breaker unit, its characterized in that: the circuit breaker unit comprises an N-line switch module arranged on one side of the automatic reclosing device, a plurality of L-line switch modules arranged on one side of the N-line switch module in an overlapping mode, and electric leakage protection metering modules arranged on one sides of the N-line switch module and the plurality of L-line switch modules, wherein each electric leakage protection metering module comprises a shell and an electric leakage protection metering assembly arranged in the shell, each electric leakage protection metering assembly comprises an electric leakage protection circuit board, a plurality of conductive tubes, a zero-sequence mutual inductor electrically connected with the electric leakage protection circuit board and sleeved on the plurality of conductive tubes, a plurality of conductive plates respectively connected with the plurality of conductive tubes, a plurality of through tubes respectively communicated with the plurality of conductive plates, a plurality of current mutual inductors respectively sleeved on the plurality of through tubes and electrically connected with the electric leakage protection circuit board, a plurality of conductive pieces connected with the plurality of through tubes, a plurality of current mutual inductors, and one ends of the conductive tubes are respectively connected to the N-line switch module and the L-line switch modules, and the conductive tubes are electrically connected with the N-line switch module and the L-line switch modules.
2. The modular recloser miniature circuit breaker according to claim 1, characterized in that: the plurality of the current-conducting tubes are rectangular arrays and penetrate through the zero sequence transformer respectively, first second screws are arranged in the plurality of the current-conducting tubes respectively, each first second screw penetrates through one end of each current-conducting plate, each current-conducting tube and is connected to the contact plates of the N-line switch module and the plurality of the L-line switch modules respectively, a second screw is arranged in each through tube, and each second screw penetrates through each current-conducting plate and each through tube and is connected to the other end of each current-conducting plate.
3. The modular recloser miniature circuit breaker according to claim 1 or 2, characterized in that: zero sequence transformer on correspond a plurality of current conducting plate punishment and do not be provided with a draw-in groove, a plurality of current conducting plate block respectively is in the draw-in groove, and constitutes a plurality of current conducting plate and zero sequence transformer's joint cooperation, and the zero sequence transformer is last to be provided with the apron of shroud on a plurality of current conducting plates.
4. The modular recloser miniature circuit breaker according to claim 3, characterized in that: zero sequence transformer on be provided with the joint sand grip, the apron in be provided with joint sand grip matched with joint groove, joint sand grip block at the joint inslot, and constitute apron and zero sequence transformer's joint cooperation.
5. The modular recloser miniature circuit breaker according to claim 3, characterized in that: a plurality of partition plates are respectively arranged on one side of the cover plate corresponding to the current transformers, and the partition plates respectively separate the current transformers between every two adjacent current transformers.
6. The modular recloser miniature circuit breaker according to claim 1 or 2, characterized in that: the leakage protection circuit board is characterized in that a plurality of wiring terminals and the leakage protection circuit board are respectively provided with a power taking piece, one end of each power taking piece is provided with a pin inserted on the leakage protection circuit board, the other end of each power taking piece is inserted into each wiring terminal, and the other end of each power taking piece is provided with a contact elastic piece abutted against the corresponding conductive piece.
7. The modular recloser miniature circuit breaker according to claim 1 or 2, characterized in that: the casing of electric leakage measurement module on be provided with the card hole, the shell of L line switch module on be provided with the checkpost, the checkpost block in the card hole, and constitute electric leakage measurement module and L line switch module's joint cooperation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110454001.3A CN113012992A (en) | 2021-04-26 | 2021-04-26 | Modular automatic reclosing miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110454001.3A CN113012992A (en) | 2021-04-26 | 2021-04-26 | Modular automatic reclosing miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113012992A true CN113012992A (en) | 2021-06-22 |
Family
ID=76380552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110454001.3A Pending CN113012992A (en) | 2021-04-26 | 2021-04-26 | Modular automatic reclosing miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113012992A (en) |
-
2021
- 2021-04-26 CN CN202110454001.3A patent/CN113012992A/en active Pending
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